Probing the shell valence structure underlying the B(E2: 0+->2+) for N,Z~40: preponderance of the p-n interaction over the sub-shell closures

Isabelle Deloncle; Brigitte Roussiere

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Probing the shell valence structure underlying the B(E2: 0+->2+) for N,Z~40: preponderance of the p-n interaction over the sub-shell closures

Isabelle Deloncle·Brigitte Roussiere

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Abstract

The very simple product of the number of particles by the number of holes appearing in the expression of the reduced B(E2:0+->2+) transition probability of even-even nuclei obtained from the extension of the seniority scheme is used to analyze the experimental B(E2:0+->2+) values in the Cr up to Se isotopes. A new interpretation is given to the B(E2:0+->2+) measured in 68Ni and 70Zn. The B(E2:0+->2+) features of the even-even nuclei between Ni and Se with neutron number ranging from 28 up to 50 fit in with a global scenario involving p-n interaction. The evolution of the B(E2:0+->2+) curves presenting very large values is amazingly reproduced by very schematic binomial calculations.

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Isabelle Deloncle, Brigitte Roussiere. 2003-09-19. Probing the shell valence structure underlying the B(E2: 0+->2+) for N,Z~40: preponderance of the p-n interaction over the sub-shell closures. https://arxiv.org/abs/nucl-th/0309050

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